<template>
    <div class="goodslist-container">
        <!-- 小球 -->
        <transition
            @before-enter="beforeEnter"
            @enter="enter"
            @after-enter="afterEnter">
            <div class="ball" v-show="ballFlag" ref="showMore"></div>
        </transition>

         <!-- 商品轮播图 -->
         <div class="mui-card">
				<div class="mui-card-content">
                    <swiper :lunbotuList="lunbotu" :isfull="false"></swiper>
				</div> 
		</div>
         <!-- 商品购买区域 -->
        <div class="mui-card">
				<div class="mui-card-header">{{goodsinfo.title}}</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
                        <p class="price">
                        市场价: <del>￥{{goodsinfo.market_price}}</del>&nbsp;&nbsp;
                        销售价: <span class="now_price">￥{{goodsinfo.sell_price}}</span>
                       </p>
                       <p>购买数量:&nbsp;<numbox @getcount="getSelectedCount" :max="goodsinfo.stock_quantity"></numbox></p>
                   
                    <p>
                        <mt-button type="primary" size="small">立即购买</mt-button>
                        <mt-button type="danger" size="small" @click="addToShopCar()">加入购物车</mt-button>
                        <!-- 子组件向父组件传值 -->

                        
                    </p>
					</div>
				</div>
		</div>

         <!-- 商品参数区域 -->
    <div class="mui-card">
				<div class="mui-card-header">商品参数</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<p>商品货号:{{goodsinfo.goods_no}}</p>
                        <p>库存情况:{{goodsinfo.stock_quantity}}</p>
                        <p>上线时间:{{goodsinfo.addtime |dateFormat}} </p>
					</div>
				</div>
				<div class="mui-card-footer">
                    <mt-button type="primary" size="large" plain @click="getDesc(id)">图文介绍</mt-button>
                   
                    <mt-button type="danger" size="large" plain @click="getComment(id)">商品评论</mt-button>
                    
                </div>
			</div>
			
      
    </div>
</template>
<script>
import swiper from '../subcomponents/swiper.vue'
import {Toast} from "mint-ui"
//导入数字选择框组件
import numbox from '../subcomponents/goodsinfo_numbox.vue'
export default{
    data(){
        return{
            id:this.$route.params.id, //将路由参数对象中的id挂载到data上，方便后期调用
            lunbotu:[] ,//轮播图的数据
            goodsinfo:[],//获取到的商品的信息
            ballFlag:false,  //控制小球隐藏和显示的标识符
            selectCount :1
        };
    },
    created(){
        this.getLunbotu();
        this.getgoodsinfo();
    },
    methods:{
        getLunbotu(){
            this.$http.get('goodslunbotu/' +this.id).then(result =>{
                if(result.body.code ===0){
                    this.lunbotu = result.body.data;
                   
                }else{
                    Toast("加载手机数据失败！")
                }
            });
        },
        getgoodsinfo(){
            this.$http.get('goodsinfo/' +this.id).then(result =>{
                if(result.body.code ===0){
                    this.goodsinfo = result.body.data[0];
                     console.log(result.body);
                }else{
                    Toast("加载手机详情数据失败！")
                }
            });
        },
         //跳转到图文介绍页面
        getDesc(id){
            //点击使用编程式导航跳转到 图文介绍页面
            this.$router.push(  {name:"goodsdesc", params:{id} });
        },
        //跳转到评论页面
        getComment(id){
            //点击使用编程式导航跳转到 评论页面
             this.$router.push(  {name:"goodscomment", params:{id} });
        },
        //添加购物车
        addToShopCar(){
            this.ballFlag = !this.ballFlag;
            // {id:商品id,count:要购买的数量,price:商品的单价,selected:false;}
            //拼接处一个，要保存到store中的数据
            var goodsinfo = {
                   id: this.id,
                count: this.selectCount,
                price: this.goodsinfo.sell_price,
             selected: true
            };

            //调用store中的mutations来添加商品
            this.$store.commit("addTocar",goodsinfo);

        },
        beforeEnter(el){
            el.style.transform = "translate(0,0)";
        },
        enter(el,done){
            el.offsetWidth;
            //获取小球在页面中的位置
            const ballPosition =this.$refs.showMore.getBoundingClientRect();
            //获取 微标在页面中的位置
           const badgePosition = document.getElementById("badge").getBoundingClientRect();
            /* 
             console.log(ballPosition);
            console.log(badgePosition); */

            //微标x-小球x   微标y-小球y
            const xDist = badgePosition.left - ballPosition.left;
            const yDist = badgePosition.top - ballPosition.top;
            /*  console.log(xDist );
            console.log(yDist); */


            el.style.transform = `translate(${xDist}px,${yDist}px)`;
            el.style.transition ="all 0.5s ease";
         /*    //动过 ease
            cubic-bezier(.4,-0.31,1,.68) */
            done();
        },
        afterEnter(el){
            this.ballFlag = !this.ballFlag;
        },
        getSelectedCount(count){
            //当子组件把选中的数量传递给父组件的时候，把选中的值保持到data上
            this.selectCount = count ;  
            console.log('父组件拿到的数量值为:' + this.selectCount);
        }
    },
    components:{
        swiper,
        numbox
    }
}
</script>
<style lang="scss" scoped>
.goodslist-container{
    background: #eee;
    overflow:hidden;
}
.now_price{
    color:red;
    font-size:16px;
    font-weight:bold;
}
.mui-card-footer{
    display: block;
    button{
        margin:15px 0;
    }
}
.ball{
    width:15px;
    height:15px;
    border-radius: 50%;
    background-color: red;
    position: absolute;
    z-index:99;
    top:361px;
    left:142px;
    /* transform:translate(95px,260px); */
}
</style>

